Ocular Trauma Score
Ophthalmology
Estimates the distribution of visual outcomes six months after serious eye injury.
How it is calculated
- Start from the initial visual acuity: no light perception scores 60, light perception or hand motion 70, 1/200 to 19/200 scores 80, 20/200 to 20/50 scores 90, and 20/40 or better scores 100.
- Then subtract for each adverse finding: globe rupture 23, endophthalmitis 17, perforating injury 14, retinal detachment 11, and a relative afferent pupillary defect 10.
- The raw total maps to a category from 1 to 5: 0–44 is OTS 1, 45–65 is OTS 2, 66–80 is OTS 3, 81–91 is OTS 4, and 92–100 is OTS 5.
- Each category carries a published distribution of visual acuity at six months, derived from over 2,500 injuries.
- The score describes a group, not a person. It is a counselling aid, not a treatment decision, and it does not predict what any individual eye will do.
References
- Kuhn F, Maisiak R, Mann L, Mester V, Morris R, Witherspoon CD. The Ocular Trauma Score (OTS). Ophthalmol Clin North Am 2002;15:163-165.
About these tools
OcuLearning Clinical Tools is part of an educational platform. These calculators are provided for learning and reference, and are not medical advice, a diagnosis, or a treatment recommendation.